DISTRIBUTION OF SUBSURFACE QUATERNARY SEDIMENT IN SOUTH BINTAN ISLAND WATERS AS A POTENTIAL HEAVY MINERAL PLACER OR RARE EARTH ELEMENT DEPOSIT BASED ON SEISMIC INTERPRETATION

Muhammad Zulfikar, Nazar Nurdin, Noor Cahyo Dwi Aryanto, Ildrem Syafri, Budi Muljana, Andi Agus Nur

Abstract


Bintan Island is one of the areas traversed by the Southeast Asian granitoid belt which is known to have the potential for heavy mineral placer deposits. Due to the dwindling presence of heavy mineral placer deposits in land areas, it is necessary to look for the potential presence of heavy mineral placer deposits in water areas. Searching for placer heavy mineral deposits accomodation in these waters requires subsurface mapping.

The method used in this subsurface mapping is a single channel seismic method with a total of 179 lines in the direction of northeast – southwest and west – east. The results of this seismic recording are then interpreted the boundaries of the seismic facies unit and distributed using the kriging method. Furthermore, the thickness calculates by using the assumption velocity 1600 m/s.

Based on the facies unit boundaries that have been interpreted, the quaternary sediments that formed in the study area are divided into 2 types of units, namely: Unit 2 which is estimated to be fluvial – transitional sediment, and Unit 1 which is estimated to be transitional sediment – shallow sea. There is also a difference in thickness patterns in these two units, where unit 2 shows a pattern of sediment thickening that resembles a paleochannel trending northeast – southwest, while unit 1 is relatively uniform.

From the results of this study, it can be said that the area that has potential for heavy mineral placer  deposits is in the west - center of the southern waters of Bintan Island. Where the potential for heavy mineral placer deposits should be in the paleochannel deposits that are part of Unit 2.

Keywords


Quaternary Sediments; Heavy Mineral Placer Deposits; Rare Earth Elements; Southern Waters of Bintan

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References


Cobbing, E. J. (2005). Granites. In Sumatra: Geology, Resources and Tectonic Evolution (Vol. 31, pp. 54–62). Geological Society.

Hanebuth, T. J., Stattegger, K., & Saito, Y. (2002). The stratigraphic architecture of the central Sunda Shelf (SE Asia) recorded by shallow-seismic surveying. Geo-Marine Letters, 22(2), 86–94. https://doi.org/10.1007/s00367-002-0102-1

Hutabarat, J., Syafri, I., Sulaksana, N., Sukiyah, E., Fauzielly, L., & Sudradjat, A. (2016). Fenomena Pelapukan Granit “Corestones” di Daerah Bagian Timur dan Utara Pulau Bintan. Seminar Nasional Ke - III Fakultas Teknik Geologi Universitas Padjadajran.

Irzon, R., & Abidin, H. Z. (2017). Kandungan Unsur Tanah Jarang pada Granit Putih Kemerahan dari Daerah Lagoi dan Perbandingan dengan Batuan Sejenis di tempat lain. Jurnal Geologi Dan Sumberdaya Mineral, 18(3), 137–146.

Molengraaff, G. A. F., & Weber, M. (1921). Proceedings Royal Academic Amsterdam. XXIII, 395–427.

Nurdin, N., Zulfikar, M., Kamiludin, U., Setiady, D., Mustafa, M. A., Setyanto, A., Widiatmoko, H. C., Setiadi, I., Hans, D. Z., Piranti, S. A., Aryanto, N. C. D., & Haryanto, A. D. (2020). Laporan Akhir Upaya Penambahan Potensi Cadangan Mineral Strategis Kelautan di Jalur Granitoid Tahap-1 (Lokasi: Bintan Selatan dan Sekitarnya, Kabupaten Bintan, Provinsi Kepulauan Riau) (Vol. 1).

Pearce, J. A., Harris, N. B. W., & Tindle, A. G. (1984). Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. Journal of Petrology, 25(4), 956–983. https://doi.org/10.1093/petrology/25.4.956

Puchała, R. J., Porbski, S. J., Śliwiński, W. R., & August, C. J. (2011). Pleistocene to Holocene transition in the central basin of the Gulf of Thailand, based on geoacoustic survey and radiocarbon ages. Marine Geology, 288(1–4), 103–111. https://doi.org/10.1016/j.margeo.2011.08.007

Rohmana, Djunaedi E.K, & M.P, P. (2007). Inventarisasi Bahan Galian. Proceeding Pemaparan Hasil Kegaitan Lapangan Dan Non Lapangan, 1–14. http://psdg.bgl.esdm.go.id/kolokium 2007/KONSERVASI/Prosiding-Bintan.pdf

Sathiamurthy, E., & Rahman, M. M. (2017). Late quaternary paleo fluvial system research of sunda shelf: A review. Bulletin of the Geological Society of Malaysia, 64(December), 81–92. https://doi.org/10.7186/bgsm64201708

Setiady, D., & Sarmili, L. (2005). Keterdapatan Beberapa Mineral Berat Di Perairan Pulau Bintan Dan Sekitarnya Sebagai Hasil Rombakan Dari Sedimen Holosen Asal Paparan Sunda. Jurnal Geologi Kelautan, 3(3), 1–7. https://doi.org/10.32693/jgk.3.3.2005.126

Solihuddin, T. (2014). A Drowning Sunda Shelf model during Last Glacial Maximum (LGM) and Holocene: A review. Indonesian Journal on Geoscience, 1(2), 99–107. https://doi.org/10.17014/ijog.v1i2.182

Veeken, P. C. H. (2007). Handbook of Geophysical Exploration: Seismic Exploration. In Elsevier (Vol. 37). https://doi.org/10.1016/S0950-1401(07)80025-5

Voris, H. K. (2000). Maps of Pleistocene sea levels in Southeast Asia: Shorelines, river systems and time durations. Journal of Biogeography, 27(5), 1153–1167. https://doi.org/10.1046/j.1365-2699.2000.00489.x

Winter, J. D. (2001). An Introduction to Igneous and Metamorphic Petrology. Prentice Hall.

Yusuf, A. F., P, M. R., Sayekti, B., & Awaludin. (2005). Inventarisasi dan Penyelidikan Bahan Galian Industri Kabupaten Kepulauan Riau, Provinsi Kepulauan Riau. Proceeding Pemaparan Hasil Kegaitan Lapangan Dan Non Lapangan, 1–5.

Zulfikar, M., Aryanto, N. C. D., Nur, A. A., & Syafri, I. (2020). Study of Granitoid Distribution at Toboali Waters, Bangka Belitung Province: Seismic data interpretation approach. Bulletin of the Marine Geology, 35(2), 53–64. https://doi.org/10.32693/bomg.35.2.2020.681




DOI: http://dx.doi.org/10.32693/bomg.36.1.2021.705